LeetCode 746.
```java package lc_746;
LeetCode 938.
```java package lc_938;
LeetCode 790.
``` package lc_790;
LeetCode 714.
``` package lc_714;
LeetCode 452.
``` package lc_452;
```java package lc_746;
```java package lc_938;
``` package lc_790;
``` package lc_714;
``` package lc_452;